Claudio Fonseca Quartet
type: MusicGroup
genre: bossa nova
genre: brazilian jazz
popularity: 27
followers: 311
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5e91e1bb140e1e1acbf3b2fac72c3b820d20cf969bf13ae3fd5d59e9c65e1861
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/206f845b-da17-4a66-9bac-e842b1b57d47.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/206f845b-da17-4a66-9bac-e842b1b57d47.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/206f845b-da17-4a66-9bac-e842b1b57d47
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5e91e1bb140e1e1acbf3b2fac72c3b820d20cf969bf13ae3fd5d59e9c65e1861","name":"Claudio Fonseca Quartet","registered_at":"2026-06-11T14:00:37Z","symbol":"NIM0042500","token_address":"0x3eb4d414f4ed87ec014c434ba016151a05aa61b7","type":"artist","uuid":"206f845b-da17-4a66-9bac-e842b1b57d47"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e91e1bb140e1e1acbf3b2fac72c3b820d20cf969bf13ae3fd5d59e9c65e1861. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/206f845b-da17-4a66-9bac-e842b1b57d47.json and https://artists.proofprofile.net/proofs/artist/206f845b-da17-4a66-9bac-e842b1b57d47.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0x5e91e1bb140e1e1acbf3b2fac72c3b820d20cf969bf13ae3fd5d59e9c65e1861","name":"Claudio Fonseca Quartet","registered_at":"2026-06-11T14:00:37Z","symbol":"NIM0042500","token_address":"0x3eb4d414f4ed87ec014c434ba016151a05aa61b7","type":"artist","uuid":"206f845b-da17-4a66-9bac-e842b1b57d47"}
album: Bossa De Urso
  type: MusicAlbum
  date published: 2019-10-10
album: Um Dia No Mar
  type: MusicAlbum
  date published: 2019-10-10